Technical specifications of porcelain element for high voltage insulators 高壓絕緣子瓷件技術(shù)條件
Sampling plans for high voltage insulators 高壓絕緣子抽樣方案
Guide to artificial pollution tests on high voltage insulators to be used on d . c . systems 直流電流系統(tǒng)用高電壓絕緣子的人工污染度試驗指南
An economical and effective new technology using sound card is proposed in this paper . it collects the leakage current from high voltage insulator , and then deals with the noise elimination using wavelet analysis . compared with the traditional signal analyzing method , the wavelet analyzing technology not only can distill the leakage current signal from the noise precisely , but also can distinguish the low quality character of leakage current signal . this method plays an important role to the device in early fault diagnosis , and can improve the accuracy of measurement and fault diagnosis in the application 介紹了一種利用電腦的聲卡對高壓絕緣子的泄漏電流進(jìn)行采集的經(jīng)濟有效的新技術(shù),并通過小波分析技術(shù)對所獲得的信號進(jìn)行消噪處理.與傳統(tǒng)的信號分析方法相比,小波分析技術(shù)不僅能從噪聲中準(zhǔn)確提取待測泄漏電流信號,同時又可真實復(fù)現(xiàn)泄漏電流信號中的劣化特征,這對設(shè)備的早期故障診斷具有重要意義.顯著提高了測量的準(zhǔn)確度,增強了設(shè)備故障診斷的準(zhǔn)確性